Robert Krüger <krueger@signal7.de> writes:
> could someone point me to a tutorial or the part in the documentation that
> explains how to partition a document into many files? At the moment I would
> like to do two things:
>
> - put each section of an article into a separate file
> - and put code examples that I use as programlistings in a separate file
External entities are not easily usable with non-XML data like
programlistings. You might want to look into XInclude, a W3C spec for
such things.
You will need a special XInclude processor for this, however -
inclusions are not processed automagically by the parser, as with
external entities. IIRC, both libxslt (and its command-line processor
xsltproc) and 4xslt from the Python 4Suite package can resolve
XIncludes before XSLT-processing.
Another possible drawback: I think that you can only include complete
XML documents, not "well-balanced" fragments, i.e. they have to have
one single root element.
> could anyone give me a working example for the two things I describe
> above.
--- book.xml:
<?xml version="1.0"?>
<book xmlns:xi="http://www.w3.org/2001/XInclude&quot;>
<bookinfo><!-- ... --></bookinfo>
<xi:include href="section1.xml"/>
</book>
--- section1.xml:
<section xmlns:xi="http://www.w3.org/2001/XInclude&quot;>
<title>Section 1</title>
<programlisting>
<xi:include href="hello.c" parse="text"/>
</programlisting>
</section>
--- hello.c:
#include <stdio.h>
int main(int argc, char **argv)
{
printf("Hello, World!\n");
return 0;
}
If you run book.xml through an XInclude-Processor (which, as stated
above, some XSLT processors can do for you), the following output
results:
$ xmllint --xinclude book.xml
<?xml version="1.0"?>
<book xmlns:xi="http://www.w3.org/2001/XInclude&quot;>
<bookinfo><!-- ... --></bookinfo>
<section xmlns:xi="http://www.w3.org/2001/XInclude&quot;>
<title>Section 1</title>
<programlisting>
#include &lt;stdio.h&gt;
int main(int argc, char **argv)
{
printf(&quot;Hello, World!\n&quot;);
return 0;
}
</programlisting>
</section>
</book>
xmllint is included with the libxml library, see
<http://xmlsoft.org>.
There is a tutorial on XInclude at XML.com:
<http://www.xml.com/pub/a/2002/07/31/xinclude.html>
The W3C spec is at <http://www.w3.org/TR/xinclude/>
hth
Henrik